a. Basic Language Tools: Detection of the actions associated with asks and framing relies on constituency parses and dependency trees, both taken from Stanford CoreNLP [1]}. As shown in Figures REF a and REF b, both help and sending are verbal (VB and VBG, respectively) and thus are extracted as candidate ask actions.
Arguments are extracted using semantic role labeling (SRL) [2]} (see Figure REF c), e.g., ARG1 ($500) is identified as an argument of sending.Arguments are assigned ask/framing categories mentioned earlier (e.g., finance_money, personal, credentials).
The dependency tree may not always yield all possible verbs, so back-off to the constituency tree is sometimes needed. Also, when SRL is not able to populate all arguments, the dependency tree is used to determine arguments for each ask or framing action.
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